A parallel beam of unpolarised light is incident on a plane glass surface at an angle of 58\(^{o}\) to the normal. If the reflected beam is completely polar...

A Spiral spring of natural length 20.00cm has a scale hanging freely in its lower end. When an object ass 40 g is placed in the pan. its length becomes cm. W...

(a) Define diffusion (b) State Graham's law of diffusion

The diagram above illustrates the path ABC, in a vertical x z plane, of a bullet shot into the air at an angle above the horizontal. Copy the diagram, and, u...

In his first attempt, a long jumper took off from the spring board with a speed of 8 ms\(^{-1}\) at 30° to the horizontal. He makes a second attempt with the...

State three methods of polarising an unpolarised light

(a) Define Young's modulus (b) When a force of 50 N is applied to the free end of an elastic cord, an extension of 4 cm is produced in the cord. Calculate th...

(a) List two properties of cathode rays (b) Explain how the intensity and energy of cathode rays may be increased

(a) For a water voltameter, identify the; (i) electrolyte; (ii) electrodes; (iii) substances deposited on the electrodes (b)State the ratio of the volume of ...